* '''[http://kalliope.staatsbibliothek-berlin.de/ Kalliope]'''<br /> Catalog of the ''Zentralkartei der Autographen (ZKA)''<nowiki>; currently contains almost 500,000 records for letters kept and cataloged in German archives and libraries, and brief biographical data for letter writers </nowiki>

* '''[http://kalliope.staatsbibliothek-berlin.de/ Kalliope]'''<br /> Catalog of the ''Zentralkartei der Autographen (ZKA)''<nowiki>; currently contains almost 500,000 records for letters kept and cataloged in German archives and libraries, and brief biographical data for letter writers </nowiki>

* '''[http://www.manuscripta-mediaevalia.de/ Manuscripta medieaevalia] '''<br /> Major research site for medieval manuscripts in German-speaking countries. Includes digitized versions of manuscript catalogs and a Handschriftendatenbank.

* '''[http://www.manuscripta-mediaevalia.de/ Manuscripta medieaevalia] '''<br /> Major research site for medieval manuscripts in German-speaking countries. Includes digitized versions of manuscript catalogs and a Handschriftendatenbank.

German Studies Web: Library Catalogs

Catalogs: All German-Speaking Countries

Karlsruher Virtueller Katalog The best bet as a starting point for searching German library catalogs. The KVK is an extremely useful "meta-catalog" that allows for simultaneous searching of several library catalogs, among them the union catalogs for Bavaria, North Rhine-Westphalia and Southwest Germany. The list of covered catalogs keeps growing; it now includes Austrian and Swiss libraries, as well as an increasing number of other national catalogs.

Gesamtkatalog der Wiegendrucke Online database of 15th century printed books, produced by the Staatsbibliothek Preussischer Kulturbesitz in Berlin. Supplements the printed edition with additional indexes and draft versions of new descriptions. Requires downloaded server software.

Early Imprints and Incunabula

der Wiegendrucke Online database of 15th century printed books, produced by the Staatsbibliothek Preussischer Kulturbesitz in Berlin. Supplements the printed edition with additional indexes and draft versions of new descriptions. Requires downloaded server software.

Kalliope Catalog of the Zentralkartei der Autographen (ZKA); currently contains almost 500,000 records for letters kept and cataloged in German archives and libraries, and brief biographical data for letter writers

Manuscripta medieaevalia Major research site for medieval manuscripts in German-speaking countries. Includes digitized versions of manuscript catalogs and a Handschriftendatenbank.